Metrobus 38B follows the Ballston-Rosslyn corridor in Arlington, serving all of the Metro stations along the corridor, and continues across the Key Bridge through Georgetown to Foggy Bottom and Farragut West.

Not all bus stops are shown on the map. Icons on the map represent schedule "timepoints" – the stops that are listed in the printed and online schedules for the route. Clicking the icons will show upcoming scheduled arrival times for that timepoint.

There are additional bus stops between the timepoints, usually about two blocks apart. Look for Metrobus and ART bus stop signs along the route. The bus stop signs will have route numbers indicating which routes serve each stop.

Arlington County Commuter Services (ACCS) is funded in part by grants from the U.S. Department of Transportation (DOT), the Virginia Department of Transportation (VDOT) and the Virginia
Department of Rail and Public Transportation (DRPT).